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605M vs LGi7-72HTD-615M 14 of 17 identical Swap Change panels

Longi Solar 605M vs Longi Solar LGi7-72HTD-615M

Longi Solar 605M
605M
605 Wp 22.60 %
Open panel page Datasheet PDF
VS
LGi7-72HTD-615M
615 Wp 22.90 %
Open panel page Datasheet PDF
The verdict

LGi7-72HTD-615M leads on the differences that matter

The largest is module efficiency: 0.30 pp more efficient. 14 of 17 comparable parameters are identical, with 2 more left out because at least one datasheet does not publish them.

See all 3 differences
How alike are they
14 of 17 comparable
parameters are identical
identical differs not published
01

What actually differs

3 of 17 parameters
Parameter 605M LGi7-72HTD-615M Difference
Module efficiency 22.60 % 22.90 % 0.30 pp more efficient
Power density 225.7 Wp/m² 229.5 Wp/m² 3.7 Wp/m² higher
Rated power 605 Wp 615 Wp 10 W more power
02

What it means on a roof

Thirty years of production
Each panel's own declared degradation curve, at 1,200 kWh/kWp a year
Same temp coeff. for both panels (-0.280 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
605M
20,299 kWh
LGi7-72HTD-615M
20,634 kWh
Lifetime gap
335 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 605M LGi7-72HTD-615M
Standard test conditions 25 °C 100.0% of rated power 605 W 615 W
Cool, bright day 40 °C 95.8% of rated power 580 W 589 W
Typical summer roof 55 °C 91.6% of rated power 554 W 563 W
Hot roof 70 °C 87.4% of rated power 529 W 538 W
03

Full specification

Parameter 605M LGi7-72HTD-615M Difference
Power and efficiency
Rated power 605 Wp 615 Wp +10 W for LGi7-72HTD-615M
Module efficiency 22.60 % 22.90 % +0.30 pp for LGi7-72HTD-615M
Power density 225.7 Wp/m² 229.5 Wp/m² +3.7 Wp/m² for LGi7-72HTD-615M
Open-circuit voltage 52.66 V 52.96 V Effectively the same
Voltage at max power 44.33 V 44.63 V Effectively the same
Short-circuit current 14.62 A 14.75 A Effectively the same
Current at max power 13.65 A 13.78 A Effectively the same
Temperature
Temperature coefficient -0.280 %/°C -0.280 %/°C Same
Mechanical
Dimensions 2376x1128x5 mm 2376x1128x5 mm Same
Module area 2.680 m² 2.680 m² Same
Weight 31.0 kg 31.0 kg Same
Weight per kWp 51.2 kg/kWp 50.4 kg/kWp Effectively the same
Warranty and degradation
Product warranty 25 yrs 25 yrs Same
Performance warranty 25 yrs 25 yrs Same
Annual degradation 0.40 %/yr 0.40 %/yr Same
Technology
Cell technology - - Neither datasheet publishes this
Cell type Monocrystalline Monocrystalline Same
Cell count - 72 Not published by Longi Solar
Bifacial No No Same
04

Against the whole database

14,129 panels
Efficiency
#3,716 vs #2,412
LGi7-72HTD-615M leads by 1,304 places
Power density
#3,901 vs #2,367
LGi7-72HTD-615M leads by 1,534 places
Heat behaviour
#1,347 vs #1,347
Tied - the same position in the database
Weight
#4,655 vs #3,802
LGi7-72HTD-615M leads by 853 places
Warranty
#9,912 vs #9,912
Tied - the same position in the database
Overall
#2,015 vs #1,620
LGi7-72HTD-615M leads by 395 places
05

More useful comparisons

Open the full database
Same series, other bin
Longi Solar 605M vs Longi Solar 620M
3 differences, the largest is module efficiency
Same series, other bin
Longi Solar 605M vs Longi Solar LGi7-72HTD-620M
3 differences, the largest is module efficiency
Same series, other bin
Longi Solar 605M vs Longi Solar 615M
3 differences, the largest is module efficiency
Same series, other bin
Longi Solar 605M vs Longi Solar 610M
One difference: module efficiency
Same series, other bin
Longi Solar 605M vs Longi Solar LGi7-72HTD-610M
One difference: module efficiency
Same series, other bin
Longi Solar 605M vs Longi Solar LGi7-72HTD-605M
The same specification on paper
06

Written summary

07

Questions about this pairing

Which panel is better: Longi Solar 605M or Longi Solar LGi7-72HTD-615M?
According to our database: Longi Solar LGi7-72HTD-615M has higher module efficiency (22.90% vs 22.60%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Longi Solar 605M and Longi Solar LGi7-72HTD-615M?
Longi Solar 605M has a module efficiency of 22.60%, while Longi Solar LGi7-72HTD-615M is 22.90%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Longi Solar 605M use vs Longi Solar LGi7-72HTD-615M?
Longi Solar 605M uses Monocrystalline cells; Longi Solar LGi7-72HTD-615M uses Monocrystalline. Modern n-type technologies (TOPCon, HJT, BC) typically deliver higher efficiency and lower degradation compared to older PERC (p-type) cells.
What is the warranty on Longi Solar 605M and Longi Solar LGi7-72HTD-615M?
Longi Solar 605M has a 25 years power warranty; Longi Solar LGi7-72HTD-615M has a 25 years power warranty. The power warranty guarantees a minimum percentage of rated output at the end of the warranty period (typically 80-87%). Product (materials) warranties are usually shorter.

Shop prices: See 154 Longi Solar offers

Every figure here is from the manufacturers' own datasheets - a dash means the value is not published, never an estimate. The thirty-year projection and the temperature scenarios are calculations from those figures, and each states its assumption above.